4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
40 #include "linux/obd.h"
42 #define IOC_OSC_TYPE 'h'
43 #define IOC_OSC_MIN_NR 20
44 #define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *)
45 #define IOC_OSC_MAX_NR 50
47 #define IOC_MDC_TYPE 'i'
48 #define IOC_MDC_MIN_NR 20
49 #define IOC_MDC_MAX_NR 50
51 #include "lustre/lustre_idl.h"
52 #include "lustre_lib.h"
54 #include "lustre_export.h"
55 #include "lustre_fid.h"
56 #include "lustre_fld.h"
57 #include "lustre_capa.h"
59 #define MAX_OBD_DEVICES 8192
67 struct lov_oinfo
{ /* per-stripe data structure */
68 struct ost_id loi_oi
; /* object ID/Sequence on the target OST */
69 int loi_ost_idx
; /* OST stripe index in lov_tgt_desc->tgts */
70 int loi_ost_gen
; /* generation of this loi_ost_idx */
72 unsigned long loi_kms_valid
:1;
73 __u64 loi_kms
; /* known minimum size */
74 struct ost_lvb loi_lvb
;
75 struct osc_async_rc loi_ar
;
78 static inline void loi_kms_set(struct lov_oinfo
*oinfo
, __u64 kms
)
81 oinfo
->loi_kms_valid
= 1;
84 static inline void loi_init(struct lov_oinfo
*loi
)
88 struct lov_stripe_md
{
91 pid_t lsm_lock_owner
; /* debugging */
93 /* maximum possible file size, might change as OSTs status changes,
94 * e.g. disconnected, deactivated */
98 struct ost_id lw_object_oi
; /* lov object id/seq */
100 /* LOV-private members start here -- only for use in lov/. */
102 __u32 lw_stripe_size
; /* size of the stripe */
103 __u32 lw_pattern
; /* striping pattern (RAID0, RAID1) */
104 __u16 lw_stripe_count
; /* number of objects being striped over */
105 __u16 lw_layout_gen
; /* generation of the layout */
106 char lw_pool_name
[LOV_MAXPOOLNAME
]; /* pool name */
109 struct lov_oinfo
*lsm_oinfo
[0];
112 #define lsm_oi lsm_wire.lw_object_oi
113 #define lsm_magic lsm_wire.lw_magic
114 #define lsm_layout_gen lsm_wire.lw_layout_gen
115 #define lsm_stripe_size lsm_wire.lw_stripe_size
116 #define lsm_pattern lsm_wire.lw_pattern
117 #define lsm_stripe_count lsm_wire.lw_stripe_count
118 #define lsm_pool_name lsm_wire.lw_pool_name
120 static inline bool lsm_is_released(struct lov_stripe_md
*lsm
)
122 return !!(lsm
->lsm_pattern
& LOV_PATTERN_F_RELEASED
);
125 static inline bool lsm_has_objects(struct lov_stripe_md
*lsm
)
129 if (lsm_is_released(lsm
))
134 static inline int lov_stripe_md_size(unsigned int stripe_count
)
136 struct lov_stripe_md lsm
;
138 return sizeof(lsm
) + stripe_count
* sizeof(lsm
.lsm_oinfo
[0]);
143 typedef int (*obd_enqueue_update_f
)(void *cookie
, int rc
);
145 /* obd info for a particular level (lov, osc). */
147 /* Lock policy. It keeps an extent which is specific for a particular
148 * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy,
149 * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */
150 ldlm_policy_data_t oi_policy
;
151 /* Flags used for set request specific flags:
152 - while lock handling, the flags obtained on the enqueue
153 request are set here.
154 - while stats, the flags used for control delay/resend.
155 - while setattr, the flags used for distinguish punch operation
158 /* Lock handle specific for every OSC lock. */
159 struct lustre_handle
*oi_lockh
;
160 /* lsm data specific for every OSC. */
161 struct lov_stripe_md
*oi_md
;
162 /* obdo data specific for every OSC, if needed at all. */
164 /* statfs data specific for every OSC, if needed at all. */
165 struct obd_statfs
*oi_osfs
;
166 /* An update callback which is called to update some data on upper
167 * level. E.g. it is used for update lsm->lsm_oinfo at every received
168 * request in osc level for enqueue requests. It is also possible to
169 * update some caller data from LOV layer if needed. */
170 obd_enqueue_update_f oi_cb_up
;
171 /* oss capability, its type is obd_capa in client to avoid copy.
172 * in contrary its type is lustre_capa in OSS. */
174 /* transfer jobid from ost_sync() to filter_sync()... */
178 /* compare all relevant fields. */
179 static inline int lov_stripe_md_cmp(struct lov_stripe_md
*m1
,
180 struct lov_stripe_md
*m2
)
183 * ->lsm_wire contains padding, but it should be zeroed out during
186 return memcmp(&m1
->lsm_wire
, &m2
->lsm_wire
, sizeof(m1
->lsm_wire
));
189 static inline int lov_lum_lsm_cmp(struct lov_user_md
*lum
,
190 struct lov_stripe_md
*lsm
)
192 if (lsm
->lsm_magic
!= lum
->lmm_magic
)
194 if ((lsm
->lsm_stripe_count
!= 0) && (lum
->lmm_stripe_count
!= 0) &&
195 (lsm
->lsm_stripe_count
!= lum
->lmm_stripe_count
))
197 if ((lsm
->lsm_stripe_size
!= 0) && (lum
->lmm_stripe_size
!= 0) &&
198 (lsm
->lsm_stripe_size
!= lum
->lmm_stripe_size
))
200 if ((lsm
->lsm_pattern
!= 0) && (lum
->lmm_pattern
!= 0) &&
201 (lsm
->lsm_pattern
!= lum
->lmm_pattern
))
203 if ((lsm
->lsm_magic
== LOV_MAGIC_V3
) &&
204 (strncmp(lsm
->lsm_pool_name
,
205 ((struct lov_user_md_v3
*)lum
)->lmm_pool_name
,
206 LOV_MAXPOOLNAME
) != 0))
211 static inline int lov_lum_swab_if_needed(struct lov_user_md_v3
*lumv3
,
213 struct lov_user_md
*lum
)
215 if (lum
&& copy_from_user(lumv3
, lum
, sizeof(struct lov_user_md_v1
)))
218 *lmm_magic
= lumv3
->lmm_magic
;
220 if (*lmm_magic
== __swab32(LOV_USER_MAGIC_V1
)) {
221 lustre_swab_lov_user_md_v1((struct lov_user_md_v1
*)lumv3
);
222 *lmm_magic
= LOV_USER_MAGIC_V1
;
223 } else if (*lmm_magic
== LOV_USER_MAGIC_V3
) {
224 if (lum
&& copy_from_user(lumv3
, lum
, sizeof(*lumv3
)))
226 } else if (*lmm_magic
== __swab32(LOV_USER_MAGIC_V3
)) {
227 if (lum
&& copy_from_user(lumv3
, lum
, sizeof(*lumv3
)))
229 lustre_swab_lov_user_md_v3(lumv3
);
230 *lmm_magic
= LOV_USER_MAGIC_V3
;
231 } else if (*lmm_magic
!= LOV_USER_MAGIC_V1
) {
233 "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n",
234 *lmm_magic
, LOV_USER_MAGIC_V1
, LOV_USER_MAGIC_V3
);
240 void lov_stripe_lock(struct lov_stripe_md
*md
);
241 void lov_stripe_unlock(struct lov_stripe_md
*md
);
244 struct list_head typ_chain
;
245 struct obd_ops
*typ_dt_ops
;
246 struct md_ops
*typ_md_ops
;
247 struct dentry
*typ_debugfs_entry
;
250 struct lu_device_type
*typ_lu
;
251 spinlock_t obd_type_lock
;
252 struct kobject
*typ_kobj
;
264 LLOG_CONFIG_ORIG_CTXT
= 0,
265 LLOG_CONFIG_REPL_CTXT
,
266 LLOG_MDS_OST_ORIG_CTXT
,
267 LLOG_MDS_OST_REPL_CTXT
,
274 LLOG_LOVEA_ORIG_CTXT
,
275 LLOG_LOVEA_REPL_CTXT
,
276 LLOG_CHANGELOG_ORIG_CTXT
, /**< changelog generation on mdd */
277 LLOG_CHANGELOG_REPL_CTXT
, /**< changelog access on clients */
278 LLOG_CHANGELOG_USER_ORIG_CTXT
, /**< for multiple changelog consumers */
279 LLOG_AGENT_ORIG_CTXT
, /**< agent requests generation on cdt */
283 struct timeout_item
{
284 enum timeout_event ti_event
;
285 unsigned long ti_timeout
;
288 struct list_head ti_obd_list
;
289 struct list_head ti_chain
;
292 #define OSC_MAX_RIF_DEFAULT 8
293 #define MDS_OSC_MAX_RIF_DEFAULT 50
294 #define OSC_MAX_RIF_MAX 256
295 #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4)
296 #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */
297 #define OSC_DEFAULT_RESENDS 10
299 /* possible values for fo_sync_lock_cancel */
301 NEVER_SYNC_ON_CANCEL
= 0,
302 BLOCKING_SYNC_ON_CANCEL
= 1,
303 ALWAYS_SYNC_ON_CANCEL
= 2,
304 NUM_SYNC_ON_CANCEL_STATES
307 #define MDC_MAX_RIF_DEFAULT 8
308 #define MDC_MAX_RIF_MAX 512
313 struct rw_semaphore cl_sem
;
314 struct obd_uuid cl_target_uuid
;
315 struct obd_import
*cl_import
; /* ptlrpc connection state */
317 /* max_mds_easize is purely a performance thing so we don't have to
318 * call obd_size_diskmd() all the time. */
319 int cl_default_mds_easize
;
320 int cl_max_mds_easize
;
321 int cl_default_mds_cookiesize
;
322 int cl_max_mds_cookiesize
;
324 enum lustre_sec_part cl_sp_me
;
325 enum lustre_sec_part cl_sp_to
;
326 struct sptlrpc_flavor cl_flvr_mgc
; /* fixed flavor of mgc->mgs */
328 /* the grant values are protected by loi_list_lock below */
329 long cl_dirty
; /* all _dirty_ in bytes */
330 long cl_dirty_max
; /* allowed w/o rpc */
331 long cl_dirty_transit
; /* dirty synchronous */
332 long cl_avail_grant
; /* bytes of credit for ost */
333 long cl_lost_grant
; /* lost credits (trunc) */
335 /* since we allocate grant by blocks, we don't know how many grant will
336 * be used to add a page into cache. As a solution, we reserve maximum
337 * grant before trying to dirty a page and unreserve the rest.
338 * See osc_{reserve|unreserve}_grant for details. */
339 long cl_reserved_grant
;
340 struct list_head cl_cache_waiters
; /* waiting for cache/grant */
341 unsigned long cl_next_shrink_grant
; /* jiffies */
342 struct list_head cl_grant_shrink_list
; /* Timeout event list */
343 int cl_grant_shrink_interval
; /* seconds */
345 /* A chunk is an optimal size used by osc_extent to determine
346 * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */
349 int cl_extent_tax
; /* extent overhead, by bytes */
351 /* keep track of objects that have lois that contain pages which
352 * have been queued for async brw. this lock also protects the
353 * lists of osc_client_pages that hang off of the loi */
355 * ->cl_loi_list_lock protects consistency of
356 * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and
357 * ->ap_completion() call-backs are executed under this lock. As we
358 * cannot guarantee that these call-backs never block on all platforms
359 * (as a matter of fact they do block on Mac OS X), type of
360 * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux
361 * and blocking mutex on Mac OS X. (Alternative is to make this lock
362 * blocking everywhere, but we don't want to slow down fast-path of
363 * our main platform.)
365 * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together
366 * with client_obd_list_{un,}lock() and
367 * client_obd_list_lock_{init,done}() functions.
369 * NB by Jinshan: though field names are still _loi_, but actually
370 * osc_object{}s are in the list.
372 client_obd_lock_t cl_loi_list_lock
;
373 struct list_head cl_loi_ready_list
;
374 struct list_head cl_loi_hp_ready_list
;
375 struct list_head cl_loi_write_list
;
376 struct list_head cl_loi_read_list
;
379 /* just a sum of the loi/lop pending numbers to be exported by /proc */
380 atomic_t cl_pending_w_pages
;
381 atomic_t cl_pending_r_pages
;
382 __u32 cl_max_pages_per_rpc
;
383 int cl_max_rpcs_in_flight
;
384 struct obd_histogram cl_read_rpc_hist
;
385 struct obd_histogram cl_write_rpc_hist
;
386 struct obd_histogram cl_read_page_hist
;
387 struct obd_histogram cl_write_page_hist
;
388 struct obd_histogram cl_read_offset_hist
;
389 struct obd_histogram cl_write_offset_hist
;
391 /* lru for osc caching pages */
392 struct cl_client_cache
*cl_cache
;
393 struct list_head cl_lru_osc
; /* member of cl_cache->ccc_lru */
394 atomic_t
*cl_lru_left
;
395 atomic_t cl_lru_busy
;
396 atomic_t cl_lru_shrinkers
;
397 atomic_t cl_lru_in_list
;
398 struct list_head cl_lru_list
; /* lru page list */
399 client_obd_lock_t cl_lru_list_lock
; /* page list protector */
401 /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */
402 atomic_t cl_destroy_in_flight
;
403 wait_queue_head_t cl_destroy_waitq
;
405 struct mdc_rpc_lock
*cl_rpc_lock
;
406 struct mdc_rpc_lock
*cl_close_lock
;
409 struct mutex cl_mgc_mutex
;
410 struct local_oid_storage
*cl_mgc_los
;
411 struct dt_object
*cl_mgc_configs_dir
;
412 atomic_t cl_mgc_refcount
;
413 struct obd_export
*cl_mgc_mgsexp
;
415 /* checksumming for data sent over the network */
416 unsigned int cl_checksum
:1; /* 0 = disabled, 1 = enabled */
417 /* supported checksum types that are worked out at connect time */
418 __u32 cl_supp_cksum_types
;
419 /* checksum algorithm to be used */
420 cksum_type_t cl_cksum_type
;
422 /* also protected by the poorly named _loi_list_lock lock above */
423 struct osc_async_rc cl_ar
;
425 /* used by quotacheck when the servers are older than 2.4 */
426 int cl_qchk_stat
; /* quotacheck stat of the peer */
427 #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */
428 #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0)
429 #warning "please consider removing quotacheck compatibility code"
432 /* sequence manager */
433 struct lu_client_seq
*cl_seq
;
435 atomic_t cl_resends
; /* resend count */
437 /* ptlrpc work for writeback in ptlrpcd context */
438 void *cl_writeback_work
;
439 /* hash tables for osc_quota_info */
440 struct cfs_hash
*cl_quota_hash
[MAXQUOTAS
];
442 #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid)
449 struct echo_client_obd
{
450 struct obd_export
*ec_exp
; /* the local connection to osc/lov */
452 struct list_head ec_objects
;
453 struct list_head ec_locks
;
459 struct obd_uuid lqo_uuid
; /* ptlrpc's c_remote_uuid */
460 struct list_head lqo_oss_list
; /* link to lov_qos */
461 __u64 lqo_bavail
; /* total bytes avail on OSS */
462 __u64 lqo_penalty
; /* current penalty */
463 __u64 lqo_penalty_per_obj
;/* penalty decrease every obj*/
464 time_t lqo_used
; /* last used time, seconds */
465 __u32 lqo_ost_count
; /* number of osts on this oss */
469 struct lov_qos_oss
*ltq_oss
; /* oss info */
470 __u64 ltq_penalty
; /* current penalty */
471 __u64 ltq_penalty_per_obj
; /* penalty decrease every obj*/
472 __u64 ltq_weight
; /* net weighting */
473 time_t ltq_used
; /* last used time, seconds */
474 unsigned int ltq_usable
:1; /* usable for striping */
477 /* Generic subset of OSTs */
479 __u32
*op_array
; /* array of index of
481 unsigned int op_count
; /* number of OSTs in the array */
482 unsigned int op_size
; /* allocated size of lp_array */
483 struct rw_semaphore op_rw_sem
; /* to protect ost_pool use */
486 /* Round-robin allocator data */
488 __u32 lqr_start_idx
; /* start index of new inode */
489 __u32 lqr_offset_idx
; /* aliasing for start_idx */
490 int lqr_start_count
; /* reseed counter */
491 struct ost_pool lqr_pool
; /* round-robin optimized list */
492 unsigned long lqr_dirty
:1; /* recalc round-robin list */
495 /* allow statfs data caching for 1 second */
496 #define OBD_STATFS_CACHE_SECONDS 1
498 struct lov_statfs_data
{
499 struct obd_info lsd_oi
;
500 struct obd_statfs lsd_statfs
;
502 /* Stripe placement optimization */
504 struct list_head lq_oss_list
; /* list of OSSs that targets use */
505 struct rw_semaphore lq_rw_sem
;
506 __u32 lq_active_oss_count
;
507 unsigned int lq_prio_free
; /* priority for free space */
508 unsigned int lq_threshold_rr
;/* priority for rr */
509 struct lov_qos_rr lq_rr
; /* round robin qos data */
510 unsigned long lq_dirty
:1, /* recalc qos data */
511 lq_same_space
:1,/* the ost's all have approx.
512 the same space avail */
513 lq_reset
:1, /* zero current penalties */
514 lq_statfs_in_progress
:1; /* statfs op in
516 /* qos statfs data */
517 struct lov_statfs_data
*lq_statfs_data
;
518 wait_queue_head_t lq_statfs_waitq
; /* waitqueue to notify statfs
519 * requests completion */
522 struct lov_tgt_desc
{
523 struct list_head ltd_kill
;
524 struct obd_uuid ltd_uuid
;
525 struct obd_device
*ltd_obd
;
526 struct obd_export
*ltd_exp
;
527 struct ltd_qos ltd_qos
; /* qos info per target */
529 __u32 ltd_index
; /* index in lov_obd->tgts */
530 unsigned long ltd_active
:1,/* is this target up for requests */
531 ltd_activate
:1,/* should target be activated */
532 ltd_reap
:1; /* should this target be deleted */
536 #define pool_tgt_size(_p) _p->pool_obds.op_size
537 #define pool_tgt_count(_p) _p->pool_obds.op_count
538 #define pool_tgt_array(_p) _p->pool_obds.op_array
539 #define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem
542 char pool_name
[LOV_MAXPOOLNAME
+ 1]; /* name of pool */
543 struct ost_pool pool_obds
; /* pool members */
544 atomic_t pool_refcount
; /* pool ref. counter */
545 struct lov_qos_rr pool_rr
; /* round robin qos */
546 struct hlist_node pool_hash
; /* access by poolname */
547 struct list_head pool_list
; /* serial access */
548 struct dentry
*pool_debugfs_entry
; /* file in /proc */
549 struct obd_device
*pool_lobd
; /* obd of the lov/lod to which
550 * this pool belongs */
554 struct lov_desc desc
;
555 struct lov_tgt_desc
**lov_tgts
; /* sparse array */
556 struct ost_pool lov_packed
; /* all OSTs in a packed
558 struct mutex lov_lock
;
559 struct obd_connect_data lov_ocd
;
560 atomic_t lov_refcount
;
561 __u32 lov_tgt_count
; /* how many OBD's */
562 __u32 lov_active_tgt_count
; /* how many active */
563 __u32 lov_death_row
;/* tgts scheduled to be deleted */
564 __u32 lov_tgt_size
; /* size of tgts array */
567 struct cfs_hash
*lov_pools_hash_body
; /* used for key access */
568 struct list_head lov_pool_list
; /* used for sequential access */
569 struct dentry
*lov_pool_debugfs_entry
;
570 enum lustre_sec_part lov_sp_me
;
572 /* Cached LRU pages from upper layer */
575 struct rw_semaphore lov_notify_lock
;
577 struct kobject
*lov_tgts_kobj
;
580 struct lmv_tgt_desc
{
581 struct obd_uuid ltd_uuid
;
582 struct obd_export
*ltd_exp
;
584 struct mutex ltd_fid_mutex
;
585 unsigned long ltd_active
:1; /* target up for requests */
588 enum placement_policy
{
589 PLACEMENT_CHAR_POLICY
= 0,
590 PLACEMENT_NID_POLICY
= 1,
591 PLACEMENT_INVAL_POLICY
= 2,
597 struct lu_client_fld lmv_fld
;
599 enum placement_policy lmv_placement
;
600 struct lmv_desc desc
;
601 struct obd_uuid cluuid
;
602 struct obd_export
*exp
;
604 struct mutex init_mutex
;
609 int max_def_cookiesize
;
612 int tgts_size
; /* size of tgts array */
613 struct lmv_tgt_desc
**tgts
;
615 struct obd_connect_data conn_data
;
616 struct kobject
*lmv_tgts_kobj
;
619 struct niobuf_local
{
620 __u64 lnb_file_offset
;
621 __u32 lnb_page_offset
;
625 struct dentry
*dentry
;
630 #define LUSTRE_FLD_NAME "fld"
631 #define LUSTRE_SEQ_NAME "seq"
633 #define LUSTRE_MDD_NAME "mdd"
634 #define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs"
635 #define LUSTRE_OSD_ZFS_NAME "osd-zfs"
636 #define LUSTRE_VVP_NAME "vvp"
637 #define LUSTRE_LMV_NAME "lmv"
638 #define LUSTRE_SLP_NAME "slp"
639 #define LUSTRE_LOD_NAME "lod"
640 #define LUSTRE_OSP_NAME "osp"
641 #define LUSTRE_LWP_NAME "lwp"
643 /* obd device type names */
644 /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */
645 #define LUSTRE_MDS_NAME "mds"
646 #define LUSTRE_MDT_NAME "mdt"
647 #define LUSTRE_MDC_NAME "mdc"
648 #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */
649 #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */
650 #define LUSTRE_OSC_NAME "osc"
651 #define LUSTRE_LOV_NAME "lov"
652 #define LUSTRE_MGS_NAME "mgs"
653 #define LUSTRE_MGC_NAME "mgc"
655 #define LUSTRE_ECHO_NAME "obdecho"
656 #define LUSTRE_ECHO_CLIENT_NAME "echo_client"
657 #define LUSTRE_QMT_NAME "qmt"
659 /* Constant obd names (post-rename) */
660 #define LUSTRE_MDS_OBDNAME "MDS"
661 #define LUSTRE_OSS_OBDNAME "OSS"
662 #define LUSTRE_MGS_OBDNAME "MGS"
663 #define LUSTRE_MGC_OBDNAME "MGC"
665 /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */
666 #define N_LOCAL_TEMP_PAGE 0x10000000
668 struct obd_trans_info
{
671 /* Only used on the server side for tracking acks. */
672 struct oti_req_ack_lock
{
673 struct lustre_handle lock
;
677 struct llog_cookie oti_onecookie
;
678 struct llog_cookie
*oti_logcookies
;
680 /** synchronous write is needed */
681 unsigned long oti_sync_write
:1;
683 /* initial thread handling transaction */
684 struct ptlrpc_thread
*oti_thread
;
687 __u64 oti_pre_version
;
691 struct obd_uuid
*oti_ost_uuid
;
694 static inline void oti_init(struct obd_trans_info
*oti
,
695 struct ptlrpc_request
*req
)
699 memset(oti
, 0, sizeof(*oti
));
704 oti
->oti_xid
= req
->rq_xid
;
705 /** VBR: take versions from request */
706 if (req
->rq_reqmsg
!= NULL
&&
707 lustre_msg_get_flags(req
->rq_reqmsg
) & MSG_REPLAY
) {
708 __u64
*pre_version
= lustre_msg_get_versions(req
->rq_reqmsg
);
710 oti
->oti_pre_version
= pre_version
? pre_version
[0] : 0;
711 oti
->oti_transno
= lustre_msg_get_transno(req
->rq_reqmsg
);
714 /** called from mds_create_objects */
715 if (req
->rq_repmsg
!= NULL
)
716 oti
->oti_transno
= lustre_msg_get_transno(req
->rq_repmsg
);
717 oti
->oti_thread
= req
->rq_svc_thread
;
718 if (req
->rq_reqmsg
!= NULL
)
719 oti
->oti_conn_cnt
= lustre_msg_get_conn_cnt(req
->rq_reqmsg
);
722 static inline void oti_alloc_cookies(struct obd_trans_info
*oti
,
728 if (num_cookies
== 1)
729 oti
->oti_logcookies
= &oti
->oti_onecookie
;
731 OBD_ALLOC_LARGE(oti
->oti_logcookies
,
732 num_cookies
* sizeof(oti
->oti_onecookie
));
734 oti
->oti_numcookies
= num_cookies
;
737 static inline void oti_free_cookies(struct obd_trans_info
*oti
)
739 if (!oti
|| !oti
->oti_logcookies
)
742 if (oti
->oti_logcookies
== &oti
->oti_onecookie
)
743 LASSERT(oti
->oti_numcookies
== 1);
745 OBD_FREE_LARGE(oti
->oti_logcookies
,
746 oti
->oti_numcookies
*sizeof(oti
->oti_onecookie
));
747 oti
->oti_logcookies
= NULL
;
748 oti
->oti_numcookies
= 0;
752 * Events signalled through obd_notify() upcall-chain.
754 enum obd_notify_event
{
757 /* Device connect start */
759 /* Device activated */
761 /* Device deactivated */
763 /* Device disconnected */
765 /* Connect data for import were changed */
768 OBD_NOTIFY_SYNC_NONBLOCK
,
770 /* Configuration event */
772 /* Administratively deactivate/activate event */
773 OBD_NOTIFY_DEACTIVATE
,
778 * Data structure used to pass obd_notify()-event to non-obd listeners (llite
779 * and liblustre being main examples).
781 struct obd_notify_upcall
{
782 int (*onu_upcall
)(struct obd_device
*host
, struct obd_device
*watched
,
783 enum obd_notify_event ev
, void *owner
, void *data
);
784 /* Opaque datum supplied by upper layer listener */
788 struct target_recovery_data
{
789 svc_handler_t trd_recovery_handler
;
790 pid_t trd_processing_task
;
791 struct completion trd_starting
;
792 struct completion trd_finishing
;
795 struct obd_llog_group
{
797 struct llog_ctxt
*olg_ctxts
[LLOG_MAX_CTXTS
];
798 wait_queue_head_t olg_waitq
;
800 struct mutex olg_cat_processing
;
803 /* corresponds to one of the obd's */
804 #define OBD_DEVICE_MAGIC 0XAB5CD6EF
805 #define OBD_DEV_BY_DEVNAME 0xffffd0de
807 struct lvfs_run_ctxt
{
808 struct dt_device
*dt
;
812 struct obd_type
*obd_type
;
815 /* common and UUID name of this device */
816 char obd_name
[MAX_OBD_NAME
];
817 struct obd_uuid obd_uuid
;
819 struct lu_device
*obd_lu_dev
;
822 /* bitfield modification is protected by obd_dev_lock */
823 unsigned long obd_attached
:1, /* finished attach */
824 obd_set_up
:1, /* finished setup */
825 obd_recovering
:1, /* there are recoverable clients */
826 obd_abort_recovery
:1,/* recovery expired */
827 obd_version_recov
:1, /* obd uses version checking */
828 obd_replayable
:1, /* recovery is enabled; inform clients */
829 obd_no_transno
:1, /* no committed-transno notification */
830 obd_no_recov
:1, /* fail instead of retry messages */
831 obd_stopping
:1, /* started cleanup */
832 obd_starting
:1, /* started setup */
833 obd_force
:1, /* cleanup with > 0 obd refcount */
834 obd_fail
:1, /* cleanup with failover */
835 obd_async_recov
:1, /* allow asynchronous orphan cleanup */
836 obd_no_conn
:1, /* deny new connections */
837 obd_inactive
:1, /* device active/inactive
838 * (for /proc/status only!!) */
839 obd_no_ir
:1, /* no imperative recovery. */
840 obd_process_conf
:1; /* device is processing mgs config */
841 /* use separate field as it is set in interrupt to don't mess with
842 * protection of other bits using _bh lock */
843 unsigned long obd_recovery_expired
:1;
844 /* uuid-export hash body */
845 struct cfs_hash
*obd_uuid_hash
;
846 /* nid-export hash body */
847 struct cfs_hash
*obd_nid_hash
;
848 atomic_t obd_refcount
;
849 wait_queue_head_t obd_refcount_waitq
;
850 struct list_head obd_exports
;
851 struct list_head obd_unlinked_exports
;
852 struct list_head obd_delayed_exports
;
854 spinlock_t obd_nid_lock
;
855 struct ldlm_namespace
*obd_namespace
;
856 struct ptlrpc_client obd_ldlm_client
; /* XXX OST/MDS only */
857 /* a spinlock is OK for what we do now, may need a semaphore later */
858 spinlock_t obd_dev_lock
; /* protect OBD bitfield above */
859 struct mutex obd_dev_mutex
;
860 __u64 obd_last_committed
;
861 spinlock_t obd_osfs_lock
;
862 struct obd_statfs obd_osfs
; /* locked by obd_osfs_lock */
864 struct lvfs_run_ctxt obd_lvfs_ctxt
;
865 struct obd_llog_group obd_olg
; /* default llog group */
866 struct obd_device
*obd_observer
;
867 struct rw_semaphore obd_observer_link_sem
;
868 struct obd_notify_upcall obd_upcall
;
869 struct obd_export
*obd_self_export
;
870 /* list of exports in LRU order, for ping evictor, with obd_dev_lock */
871 struct list_head obd_exports_timed
;
872 time_t obd_eviction_timer
; /* for ping evictor */
874 int obd_max_recoverable_clients
;
875 atomic_t obd_connected_clients
;
876 int obd_stale_clients
;
877 int obd_delayed_clients
;
878 /* this lock protects all recovery list_heads, timer and
879 * obd_next_recovery_transno value */
880 spinlock_t obd_recovery_task_lock
;
881 __u64 obd_next_recovery_transno
;
882 int obd_replayed_requests
;
883 int obd_requests_queued_for_recovery
;
884 wait_queue_head_t obd_next_transno_waitq
;
885 /* protected by obd_recovery_task_lock */
886 struct timer_list obd_recovery_timer
;
887 time_t obd_recovery_start
; /* seconds */
888 time_t obd_recovery_end
; /* seconds, for lprocfs_status */
889 int obd_recovery_time_hard
;
890 int obd_recovery_timeout
;
891 int obd_recovery_ir_factor
;
893 /* new recovery stuff from CMD2 */
894 struct target_recovery_data obd_recovery_data
;
895 int obd_replayed_locks
;
896 atomic_t obd_req_replay_clients
;
897 atomic_t obd_lock_replay_clients
;
898 /* all lists are protected by obd_recovery_task_lock */
899 struct list_head obd_req_replay_queue
;
900 struct list_head obd_lock_replay_queue
;
901 struct list_head obd_final_req_queue
;
902 int obd_recovery_stage
;
905 struct client_obd cli
;
906 struct echo_client_obd echo_client
;
910 /* Fields used by LProcFS */
911 unsigned int obd_cntr_base
;
912 struct lprocfs_stats
*obd_stats
;
914 unsigned int md_cntr_base
;
915 struct lprocfs_stats
*md_stats
;
917 struct dentry
*obd_debugfs_entry
;
918 struct dentry
*obd_svc_debugfs_entry
;
919 struct lprocfs_stats
*obd_svc_stats
;
920 atomic_t obd_evict_inprogress
;
921 wait_queue_head_t obd_evict_inprogress_waitq
;
922 struct list_head obd_evict_list
; /* protected with pet_lock */
925 * Ldlm pool part. Save last calculated SLV and Limit.
927 rwlock_t obd_pool_lock
;
932 * A list of outstanding class_incref()'s against this obd. For
935 struct lu_ref obd_reference
;
937 int obd_conn_inprogress
;
939 struct kobject obd_kobj
; /* sysfs object */
940 struct completion obd_kobj_unregister
;
943 #define OBD_LLOG_FL_SENDNOW 0x0001
944 #define OBD_LLOG_FL_EXIT 0x0002
946 enum obd_cleanup_stage
{
947 /* Special case hack for MDS LOVs */
949 /* can be directly mapped to .ldto_device_fini() */
953 /* get/set_info keys */
954 #define KEY_ASYNC "async"
955 #define KEY_BLOCKSIZE_BITS "blocksize_bits"
956 #define KEY_BLOCKSIZE "blocksize"
957 #define KEY_CAPA_KEY "capa_key"
958 #define KEY_CHANGELOG_CLEAR "changelog_clear"
959 #define KEY_FID2PATH "fid2path"
960 #define KEY_CHECKSUM "checksum"
961 #define KEY_CLEAR_FS "clear_fs"
962 #define KEY_CONN_DATA "conn_data"
963 #define KEY_EVICT_BY_NID "evict_by_nid"
964 #define KEY_FIEMAP "fiemap"
965 #define KEY_FLUSH_CTX "flush_ctx"
966 #define KEY_GRANT_SHRINK "grant_shrink"
967 #define KEY_HSM_COPYTOOL_SEND "hsm_send"
968 #define KEY_INIT_RECOV_BACKUP "init_recov_bk"
969 #define KEY_INIT_RECOV "initial_recov"
970 #define KEY_INTERMDS "inter_mds"
971 #define KEY_LAST_ID "last_id"
972 #define KEY_LAST_FID "last_fid"
973 #define KEY_LOCK_TO_STRIPE "lock_to_stripe"
974 #define KEY_LOVDESC "lovdesc"
975 #define KEY_LOV_IDX "lov_idx"
976 #define KEY_MAX_EASIZE "max_easize"
977 #define KEY_DEFAULT_EASIZE "default_easize"
978 #define KEY_MAX_COOKIESIZE "max_cookiesize"
979 #define KEY_DEFAULT_COOKIESIZE "default_cookiesize"
980 #define KEY_MDS_CONN "mds_conn"
981 #define KEY_MGSSEC "mgssec"
982 #define KEY_NEXT_ID "next_id"
983 #define KEY_READ_ONLY "read-only"
984 #define KEY_REGISTER_TARGET "register_target"
985 #define KEY_SET_FS "set_fs"
986 #define KEY_TGT_COUNT "tgt_count"
987 /* KEY_SET_INFO in lustre_idl.h */
988 #define KEY_SPTLRPC_CONF "sptlrpc_conf"
989 #define KEY_CONNECT_FLAG "connect_flags"
990 #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel"
992 #define KEY_CACHE_SET "cache_set"
993 #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink"
994 #define KEY_CHANGELOG_INDEX "changelog_index"
998 /* /!\ must be coherent with include/linux/namei.h on patched kernel */
999 #define IT_OPEN (1 << 0)
1000 #define IT_CREAT (1 << 1)
1001 #define IT_READDIR (1 << 2)
1002 #define IT_GETATTR (1 << 3)
1003 #define IT_LOOKUP (1 << 4)
1004 #define IT_UNLINK (1 << 5)
1005 #define IT_TRUNC (1 << 6)
1006 #define IT_GETXATTR (1 << 7)
1007 #define IT_EXEC (1 << 8)
1008 #define IT_PIN (1 << 9)
1009 #define IT_LAYOUT (1 << 10)
1010 #define IT_QUOTA_DQACQ (1 << 11)
1011 #define IT_QUOTA_CONN (1 << 12)
1012 #define IT_SETXATTR (1 << 13)
1014 static inline int it_to_lock_mode(struct lookup_intent
*it
)
1016 /* CREAT needs to be tested before open (both could be set) */
1017 if (it
->it_op
& IT_CREAT
)
1019 else if (it
->it_op
& (IT_READDIR
| IT_GETATTR
| IT_OPEN
| IT_LOOKUP
|
1022 else if (it
->it_op
& IT_GETXATTR
)
1024 else if (it
->it_op
& IT_SETXATTR
)
1027 LASSERTF(0, "Invalid it_op: %d\n", it
->it_op
);
1032 struct lu_fid op_fid1
; /* operation fid1 (usually parent) */
1033 struct lu_fid op_fid2
; /* operation fid2 (usually child) */
1034 struct lu_fid op_fid3
; /* 2 extra fids to find conflicting */
1035 struct lu_fid op_fid4
; /* to the operation locks. */
1036 u32 op_mds
; /* what mds server open will go to */
1037 struct lustre_handle op_handle
;
1039 const char *op_name
;
1042 struct lmv_stripe_md
*op_mea1
;
1043 struct lmv_stripe_md
*op_mea2
;
1044 __u32 op_suppgids
[2];
1050 /* iattr fields and blocks. */
1051 struct iattr op_attr
;
1052 unsigned int op_attr_flags
;
1054 loff_t op_attr_blocks
;
1056 /* Size-on-MDS epoch and flags. */
1061 struct obd_capa
*op_capa1
;
1062 struct obd_capa
*op_capa2
;
1064 /* Various operation flags. */
1065 enum mds_op_bias op_bias
;
1067 /* Operation type */
1070 /* Used by readdir */
1073 /* Used by readdir */
1076 /* used to transfer info between the stacks of MD client
1077 * see enum op_cli_flags */
1080 /* File object data version for HSM release, on client */
1081 __u64 op_data_version
;
1082 struct lustre_handle op_lease_handle
;
1086 CLI_SET_MEA
= 1 << 0,
1087 CLI_RM_ENTRY
= 1 << 1,
1090 struct md_enqueue_info
;
1091 /* metadata stat-ahead */
1093 struct md_enqueue_info
{
1094 struct md_op_data mi_data
;
1095 struct lookup_intent mi_it
;
1096 struct lustre_handle mi_lockh
;
1097 struct inode
*mi_dir
;
1098 int (*mi_cb
)(struct ptlrpc_request
*req
,
1099 struct md_enqueue_info
*minfo
, int rc
);
1101 unsigned int mi_generation
;
1105 struct module
*o_owner
;
1106 int (*o_iocontrol
)(unsigned int cmd
, struct obd_export
*exp
, int len
,
1107 void *karg
, void *uarg
);
1108 int (*o_get_info
)(const struct lu_env
*env
, struct obd_export
*,
1109 __u32 keylen
, void *key
, __u32
*vallen
, void *val
,
1110 struct lov_stripe_md
*lsm
);
1111 int (*o_set_info_async
)(const struct lu_env
*, struct obd_export
*,
1112 __u32 keylen
, void *key
,
1113 __u32 vallen
, void *val
,
1114 struct ptlrpc_request_set
*set
);
1115 int (*o_attach
)(struct obd_device
*dev
, u32 len
, void *data
);
1116 int (*o_detach
)(struct obd_device
*dev
);
1117 int (*o_setup
)(struct obd_device
*dev
, struct lustre_cfg
*cfg
);
1118 int (*o_precleanup
)(struct obd_device
*dev
,
1119 enum obd_cleanup_stage cleanup_stage
);
1120 int (*o_cleanup
)(struct obd_device
*dev
);
1121 int (*o_process_config
)(struct obd_device
*dev
, u32 len
, void *data
);
1122 int (*o_postrecov
)(struct obd_device
*dev
);
1123 int (*o_add_conn
)(struct obd_import
*imp
, struct obd_uuid
*uuid
,
1125 int (*o_del_conn
)(struct obd_import
*imp
, struct obd_uuid
*uuid
);
1126 /* connect to the target device with given connection
1127 * data. @ocd->ocd_connect_flags is modified to reflect flags actually
1128 * granted by the target, which are guaranteed to be a subset of flags
1129 * asked for. If @ocd == NULL, use default parameters. */
1130 int (*o_connect
)(const struct lu_env
*env
,
1131 struct obd_export
**exp
, struct obd_device
*src
,
1132 struct obd_uuid
*cluuid
, struct obd_connect_data
*ocd
,
1134 int (*o_reconnect
)(const struct lu_env
*env
,
1135 struct obd_export
*exp
, struct obd_device
*src
,
1136 struct obd_uuid
*cluuid
,
1137 struct obd_connect_data
*ocd
,
1139 int (*o_disconnect
)(struct obd_export
*exp
);
1141 /* Initialize/finalize fids infrastructure. */
1142 int (*o_fid_init
)(struct obd_device
*obd
,
1143 struct obd_export
*exp
, enum lu_cli_type type
);
1144 int (*o_fid_fini
)(struct obd_device
*obd
);
1146 /* Allocate new fid according to passed @hint. */
1147 int (*o_fid_alloc
)(struct obd_export
*exp
, struct lu_fid
*fid
,
1148 struct md_op_data
*op_data
);
1151 * Object with @fid is getting deleted, we may want to do something
1154 int (*o_statfs
)(const struct lu_env
*, struct obd_export
*exp
,
1155 struct obd_statfs
*osfs
, __u64 max_age
, __u32 flags
);
1156 int (*o_statfs_async
)(struct obd_export
*exp
, struct obd_info
*oinfo
,
1157 __u64 max_age
, struct ptlrpc_request_set
*set
);
1158 int (*o_packmd
)(struct obd_export
*exp
, struct lov_mds_md
**disk_tgt
,
1159 struct lov_stripe_md
*mem_src
);
1160 int (*o_unpackmd
)(struct obd_export
*exp
,
1161 struct lov_stripe_md
**mem_tgt
,
1162 struct lov_mds_md
*disk_src
, int disk_len
);
1163 int (*o_preallocate
)(struct lustre_handle
*, u32
*req
, u64
*ids
);
1164 /* FIXME: add fid capability support for create & destroy! */
1165 int (*o_create
)(const struct lu_env
*env
, struct obd_export
*exp
,
1166 struct obdo
*oa
, struct lov_stripe_md
**ea
,
1167 struct obd_trans_info
*oti
);
1168 int (*o_destroy
)(const struct lu_env
*env
, struct obd_export
*exp
,
1169 struct obdo
*oa
, struct lov_stripe_md
*ea
,
1170 struct obd_trans_info
*oti
, struct obd_export
*md_exp
,
1172 int (*o_setattr
)(const struct lu_env
*, struct obd_export
*exp
,
1173 struct obd_info
*oinfo
, struct obd_trans_info
*oti
);
1174 int (*o_setattr_async
)(struct obd_export
*exp
, struct obd_info
*oinfo
,
1175 struct obd_trans_info
*oti
,
1176 struct ptlrpc_request_set
*rqset
);
1177 int (*o_getattr
)(const struct lu_env
*env
, struct obd_export
*exp
,
1178 struct obd_info
*oinfo
);
1179 int (*o_getattr_async
)(struct obd_export
*exp
, struct obd_info
*oinfo
,
1180 struct ptlrpc_request_set
*set
);
1181 int (*o_adjust_kms
)(struct obd_export
*exp
, struct lov_stripe_md
*lsm
,
1182 u64 size
, int shrink
);
1183 int (*o_preprw
)(const struct lu_env
*env
, int cmd
,
1184 struct obd_export
*exp
, struct obdo
*oa
, int objcount
,
1185 struct obd_ioobj
*obj
, struct niobuf_remote
*remote
,
1186 int *nr_pages
, struct niobuf_local
*local
,
1187 struct obd_trans_info
*oti
, struct lustre_capa
*capa
);
1188 int (*o_commitrw
)(const struct lu_env
*env
, int cmd
,
1189 struct obd_export
*exp
, struct obdo
*oa
,
1190 int objcount
, struct obd_ioobj
*obj
,
1191 struct niobuf_remote
*remote
, int pages
,
1192 struct niobuf_local
*local
,
1193 struct obd_trans_info
*oti
, int rc
);
1194 int (*o_find_cbdata
)(struct obd_export
*, struct lov_stripe_md
*,
1195 ldlm_iterator_t it
, void *data
);
1196 int (*o_init_export
)(struct obd_export
*exp
);
1197 int (*o_destroy_export
)(struct obd_export
*exp
);
1199 /* metadata-only methods */
1200 int (*o_import_event
)(struct obd_device
*, struct obd_import
*,
1201 enum obd_import_event
);
1203 int (*o_notify
)(struct obd_device
*obd
, struct obd_device
*watched
,
1204 enum obd_notify_event ev
, void *data
);
1206 int (*o_health_check
)(const struct lu_env
*env
, struct obd_device
*);
1207 struct obd_uuid
*(*o_get_uuid
)(struct obd_export
*exp
);
1210 int (*o_quotacheck
)(struct obd_device
*, struct obd_export
*,
1211 struct obd_quotactl
*);
1212 int (*o_quotactl
)(struct obd_device
*, struct obd_export
*,
1213 struct obd_quotactl
*);
1216 int (*o_pool_new
)(struct obd_device
*obd
, char *poolname
);
1217 int (*o_pool_del
)(struct obd_device
*obd
, char *poolname
);
1218 int (*o_pool_add
)(struct obd_device
*obd
, char *poolname
,
1220 int (*o_pool_rem
)(struct obd_device
*obd
, char *poolname
,
1222 void (*o_getref
)(struct obd_device
*obd
);
1223 void (*o_putref
)(struct obd_device
*obd
);
1225 * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line
1226 * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c.
1227 * Also, add a wrapper function in include/linux/obd_class.h. */
1231 LUSTRE_OPC_MKDIR
= (1 << 0),
1232 LUSTRE_OPC_SYMLINK
= (1 << 1),
1233 LUSTRE_OPC_MKNOD
= (1 << 2),
1234 LUSTRE_OPC_CREATE
= (1 << 3),
1235 LUSTRE_OPC_ANY
= (1 << 4)
1238 /* lmv structures */
1239 #define MEA_MAGIC_LAST_CHAR 0xb2221ca1
1240 #define MEA_MAGIC_ALL_CHARS 0xb222a11c
1241 #define MEA_MAGIC_HASH_SEGMENT 0xb222a11b
1243 #define MAX_HASH_SIZE_32 0x7fffffffUL
1244 #define MAX_HASH_SIZE 0x7fffffffffffffffULL
1245 #define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL
1248 struct mdt_body
*body
;
1249 struct lov_stripe_md
*lsm
;
1250 struct lmv_stripe_md
*mea
;
1251 #ifdef CONFIG_FS_POSIX_ACL
1252 struct posix_acl
*posix_acl
;
1254 struct mdt_remote_perm
*remote_perm
;
1255 struct obd_capa
*mds_capa
;
1256 struct obd_capa
*oss_capa
;
1259 struct md_open_data
{
1260 struct obd_client_handle
*mod_och
;
1261 struct ptlrpc_request
*mod_open_req
;
1262 struct ptlrpc_request
*mod_close_req
;
1263 atomic_t mod_refcount
;
1267 struct lookup_intent
;
1270 int (*m_getstatus
)(struct obd_export
*, struct lu_fid
*,
1271 struct obd_capa
**);
1272 int (*m_null_inode
)(struct obd_export
*, const struct lu_fid
*);
1273 int (*m_find_cbdata
)(struct obd_export
*, const struct lu_fid
*,
1274 ldlm_iterator_t
, void *);
1275 int (*m_close
)(struct obd_export
*, struct md_op_data
*,
1276 struct md_open_data
*, struct ptlrpc_request
**);
1277 int (*m_create
)(struct obd_export
*, struct md_op_data
*,
1278 const void *, int, int, __u32
, __u32
, cfs_cap_t
,
1279 __u64
, struct ptlrpc_request
**);
1280 int (*m_done_writing
)(struct obd_export
*, struct md_op_data
*,
1281 struct md_open_data
*);
1282 int (*m_enqueue
)(struct obd_export
*, struct ldlm_enqueue_info
*,
1283 struct lookup_intent
*, struct md_op_data
*,
1284 struct lustre_handle
*, void *, int,
1285 struct ptlrpc_request
**, __u64
);
1286 int (*m_getattr
)(struct obd_export
*, struct md_op_data
*,
1287 struct ptlrpc_request
**);
1288 int (*m_getattr_name
)(struct obd_export
*, struct md_op_data
*,
1289 struct ptlrpc_request
**);
1290 int (*m_intent_lock
)(struct obd_export
*, struct md_op_data
*,
1291 void *, int, struct lookup_intent
*, int,
1292 struct ptlrpc_request
**,
1293 ldlm_blocking_callback
, __u64
);
1294 int (*m_link
)(struct obd_export
*, struct md_op_data
*,
1295 struct ptlrpc_request
**);
1296 int (*m_rename
)(struct obd_export
*, struct md_op_data
*,
1297 const char *, int, const char *, int,
1298 struct ptlrpc_request
**);
1299 int (*m_is_subdir
)(struct obd_export
*, const struct lu_fid
*,
1300 const struct lu_fid
*,
1301 struct ptlrpc_request
**);
1302 int (*m_setattr
)(struct obd_export
*, struct md_op_data
*, void *,
1303 int, void *, int, struct ptlrpc_request
**,
1304 struct md_open_data
**mod
);
1305 int (*m_sync
)(struct obd_export
*, const struct lu_fid
*,
1306 struct obd_capa
*, struct ptlrpc_request
**);
1307 int (*m_readpage
)(struct obd_export
*, struct md_op_data
*,
1308 struct page
**, struct ptlrpc_request
**);
1310 int (*m_unlink
)(struct obd_export
*, struct md_op_data
*,
1311 struct ptlrpc_request
**);
1313 int (*m_setxattr
)(struct obd_export
*, const struct lu_fid
*,
1314 struct obd_capa
*, u64
, const char *,
1315 const char *, int, int, int, __u32
,
1316 struct ptlrpc_request
**);
1318 int (*m_getxattr
)(struct obd_export
*, const struct lu_fid
*,
1319 struct obd_capa
*, u64
, const char *,
1320 const char *, int, int, int,
1321 struct ptlrpc_request
**);
1323 int (*m_init_ea_size
)(struct obd_export
*, int, int, int, int);
1325 int (*m_get_lustre_md
)(struct obd_export
*, struct ptlrpc_request
*,
1326 struct obd_export
*, struct obd_export
*,
1327 struct lustre_md
*);
1329 int (*m_free_lustre_md
)(struct obd_export
*, struct lustre_md
*);
1331 int (*m_set_open_replay_data
)(struct obd_export
*,
1332 struct obd_client_handle
*,
1333 struct lookup_intent
*);
1334 int (*m_clear_open_replay_data
)(struct obd_export
*,
1335 struct obd_client_handle
*);
1336 int (*m_set_lock_data
)(struct obd_export
*, __u64
*, void *, __u64
*);
1338 ldlm_mode_t (*m_lock_match
)(struct obd_export
*, __u64
,
1339 const struct lu_fid
*, ldlm_type_t
,
1340 ldlm_policy_data_t
*, ldlm_mode_t
,
1341 struct lustre_handle
*);
1343 int (*m_cancel_unused
)(struct obd_export
*, const struct lu_fid
*,
1344 ldlm_policy_data_t
*, ldlm_mode_t
,
1345 ldlm_cancel_flags_t flags
, void *opaque
);
1346 int (*m_renew_capa
)(struct obd_export
*, struct obd_capa
*oc
,
1347 renew_capa_cb_t cb
);
1348 int (*m_unpack_capa
)(struct obd_export
*, struct ptlrpc_request
*,
1349 const struct req_msg_field
*, struct obd_capa
**);
1351 int (*m_get_remote_perm
)(struct obd_export
*, const struct lu_fid
*,
1352 struct obd_capa
*, __u32
,
1353 struct ptlrpc_request
**);
1355 int (*m_intent_getattr_async
)(struct obd_export
*,
1356 struct md_enqueue_info
*,
1357 struct ldlm_enqueue_info
*);
1359 int (*m_revalidate_lock
)(struct obd_export
*, struct lookup_intent
*,
1360 struct lu_fid
*, __u64
*bits
);
1363 * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to
1364 * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
1365 * wrapper function in include/linux/obd_class.h.
1369 struct lsm_operations
{
1370 void (*lsm_free
)(struct lov_stripe_md
*);
1371 int (*lsm_destroy
)(struct lov_stripe_md
*, struct obdo
*oa
,
1372 struct obd_export
*md_exp
);
1373 void (*lsm_stripe_by_index
)(struct lov_stripe_md
*, int *, u64
*,
1375 void (*lsm_stripe_by_offset
)(struct lov_stripe_md
*, int *, u64
*,
1377 int (*lsm_lmm_verify
)(struct lov_mds_md
*lmm
, int lmm_bytes
,
1378 __u16
*stripe_count
);
1379 int (*lsm_unpackmd
)(struct lov_obd
*lov
, struct lov_stripe_md
*lsm
,
1380 struct lov_mds_md
*lmm
);
1383 extern const struct lsm_operations lsm_v1_ops
;
1384 extern const struct lsm_operations lsm_v3_ops
;
1385 static inline const struct lsm_operations
*lsm_op_find(int magic
)
1393 CERROR("Cannot recognize lsm_magic %08x\n", magic
);
1398 /* Requests for obd_extent_calc() */
1399 #define OBD_CALC_STRIPE_START 1
1400 #define OBD_CALC_STRIPE_END 2
1402 static inline struct lustre_capa
*oinfo_capa(struct obd_info
*oinfo
)
1404 return oinfo
->oi_capa
;
1407 static inline struct md_open_data
*obd_mod_alloc(void)
1409 struct md_open_data
*mod
;
1411 mod
= kzalloc(sizeof(*mod
), GFP_NOFS
);
1414 atomic_set(&mod
->mod_refcount
, 1);
1418 #define obd_mod_get(mod) atomic_inc(&(mod)->mod_refcount)
1419 #define obd_mod_put(mod) \
1421 if (atomic_dec_and_test(&(mod)->mod_refcount)) { \
1422 if ((mod)->mod_open_req) \
1423 ptlrpc_req_finished((mod)->mod_open_req); \
1428 void obdo_from_inode(struct obdo
*dst
, struct inode
*src
, u32 valid
);
1429 void obdo_set_parent_fid(struct obdo
*dst
, const struct lu_fid
*parent
);
1431 /* return 1 if client should be resend request */
1432 static inline int client_should_resend(int resend
, struct client_obd
*cli
)
1434 return atomic_read(&cli
->cl_resends
) ?
1435 atomic_read(&cli
->cl_resends
) > resend
: 1;
1439 * Return device name for this device
1441 * XXX: lu_device is declared before obd_device, while a pointer pointing
1442 * back to obd_device in lu_device, so this helper function defines here
1443 * instead of in lu_object.h
1445 static inline const char *lu_dev_name(const struct lu_device
*lu_dev
)
1447 return lu_dev
->ld_obd
->obd_name
;
1450 static inline bool filename_is_volatile(const char *name
, int namelen
, int *idx
)
1455 if (strncmp(name
, LUSTRE_VOLATILE_HDR
, LUSTRE_VOLATILE_HDR_LEN
) != 0)
1458 /* caller does not care of idx */
1462 /* volatile file, the MDT can be set from name */
1463 /* name format is LUSTRE_VOLATILE_HDR:[idx]: */
1464 /* if no MDT is specified, use std way */
1465 if (namelen
< LUSTRE_VOLATILE_HDR_LEN
+ 2)
1467 /* test for no MDT idx case */
1468 if ((*(name
+ LUSTRE_VOLATILE_HDR_LEN
) == ':') &&
1469 (*(name
+ LUSTRE_VOLATILE_HDR_LEN
+ 1) == ':')) {
1473 /* we have an idx, read it */
1474 start
= name
+ LUSTRE_VOLATILE_HDR_LEN
+ 1;
1475 *idx
= simple_strtoul(start
, &end
, 0);
1477 * no digit, no trailing :, negative value
1479 if (((*idx
== 0) && (end
== start
)) ||
1480 (*end
!= ':') || (*idx
< 0))
1485 /* bad format of mdt idx, we cannot return an error
1486 * to caller so we use hash algo */
1487 CERROR("Bad volatile file name format: %s\n",
1488 name
+ LUSTRE_VOLATILE_HDR_LEN
);
1492 static inline int cli_brw_size(struct obd_device
*obd
)
1494 LASSERT(obd
!= NULL
);
1495 return obd
->u
.cli
.cl_max_pages_per_rpc
<< PAGE_CACHE_SHIFT
;
1498 #endif /* __OBD_H */